Semiportable derrick



Nov. 29, 1927. 1,650,656

M. J. SASGEN SEMIPORTABLE DERRICK Filed Sept. 26, 1925 s sheets-sheet 2 l wzzmgm W W M. J. SASGEN SEMI PORTABLE DERRICK Nov. 29, 1927. 1,650,656

eats-Sheet 3 Filed Sept. 26, 1925 Nov. 29, 1927.

M. J. SASGEN SEMIPORTABLE nnmucx Filed Sept. 26, 1925 5 Sheets-Sheet 4 I I l f Micfiaei J. sdsgerl Nov. 29, 1927. 1,650,656

M. J. SASGEN SEMIPORTABLE DERRICK Filed Sept. ,26, 1925- 5 Shets-Sheet 5 Z Y 1 Michael (I gag qa7z ry a M Winn/1 atented Nov. 2%,

MICHAEL J. sa senn, or onio ieo, initiators,

ares we ems;

AssIenon TO sesonn DERRIQK COM- PANY, or on oeeo, ILLIrtors, A. CORPORATION orILLINoIs.

sE'MIronrA-Bm nnnnioiz.

Application filed September 26, 1925. Serial No.-'58,785.

My invention relates to improvements in dericks and has special referenceto derricks which are semi-portable.

The object of this invention is to provide a derrick of the kind mentionedwhich "can such a derrick by which the power can be applied, either by means of a power device on the derr1ck 1tself orby means of apower 1 device located on a, level with the derrick,

or located below same, as may be convenient.

A further object is to provideia simple readily collapsible construction wherebyya post or pillar can be readily set and held n vertical position, i and a boom 'pivotally mounted onsame so asto beswung around horizontally. a, a

Further objects and advantageous features will appear hereinafter.

The invention will bemore readily understood from the following description taken in conjunction with the accompanying draw- V ings in which A a Figure 1, is a; side elevation of semiportable derrick made inaccordance with my invention; y a y i I Figure 2, is a fragincntary plan sect on on the line 2-2 of Figure 1; a p v Figure 3, is afrag nentary plan section on the line 33 of Figure 1; 1 y

Figure A, is a fragmentary, verticahseo tional view on the line 4-41-of Figure 3;

Figure 5, is a fragmentary. horizontalsec tion on the line 5,5 of Figure ,4; p j V a; l Figure 6, is a fragmentary, v-e'rticalgceir" tral sectional view on ure 1; 1 1 Figure 7, is a fr gmentary vertical, central, sectional View on the line 7+7 of Fi .ure6; i

Figure 8, is a fragmentary, vertical, central, sectional View on the line 88 0f Figurel; I a

cation of the line "of Figure 9, is asection similar to Figure 8 but taken at right angles thereto, viz, on the line' 9-9 of Figure 8;

Figure 10, is a side elevation showing the base and the post in collapsed or folded con:

dition;

re 11, is a View similar to Figure 1,

showing, the derrick arranged for the applipower from a source below t-he-derrick; I V

Figure12,isa view similar to Figure 11 but showing the derrick arranged for: the applic'ationof power from a source located on the level of the derrick;

' Figure 13, is'a fragmentary side elevation of thjebooin locking-ring, showing the cam lever in r ng clamping position; and r Figure 14, isajview similarto Figure 13,

butshowing' the clainpinglever in its noncla-mping position y In said drawings 1 represents (a post or pillar, preferably madelof a piece of metal pipe andwhichis adapted to be supported in vertical position foruse, and is adapt-ed to be arranged in parallelrelat-ion to various base or supporting partswhen the derrick is arranged in knocked down condition] for storage or shipment.

The pillar 1 is mounted at its lower end inbase ring casting 2 in which the lower end of the post fits and to which it isrigidly secured bybolts 3. a v

The ring 2 is formed with an inner annular should-er 4 upon which the post stands; The ringQ is secured to a base casting 5 which is provided with two upstanding ears or lugs 6- at one side and with two similar ears 7 at the other side. The base ring 2 is likewise provided with two outstanding-lugs '8 at one side, adapted to be received between the lugs6 and with two similarlugs 9 Lat theother side, adapted to be received between; the two, lugs. 7 All of these lugs are perforated to receive bolts for securing thepostfnpon the base casting. ,yAdOOlt- 1O secures thelugs 8 bet-ween the lugs Gland a bolt l l secures the slugs 9 between the lugs 7. The; base,casting is channel shaped and isadapted, to receive the: inner end a of a base channel member 12, theinner end of the channel member extending beneath the post 1 and the channel member extending out horizontally from the base on a line with lugs 7 and being suitably rigidly secured to the base casting by bolts 13. As best shown in Figure 8, the bottom wall of the 'base casting 3 and the web of the channel member.. 1 2 are provided with an opening 14 centra'lly located beneath the post' 1 for a purpose to be explained. By removing the outer bolt 10 the post 1 can be swung down into parallel relation to the channel member 12, as shown in dotted lines in Figure 10.

Extending out from the base casting 3 at right angles to .the channel member 12 is a second channel base member 15. This member is secured at its inner end tothe base casting 3 in such a manner that it can be readily swung around in a horizontal plane into parallelism to the member 12 when the derrick is collapsed for shipment. For this purpose there is a connection'casting 16 provided secured to the inner end of'the channel member 15 by bolts 17 and this casting is provided withperforated lugs 18, one at each side, adapted to be received between a pair of peforated lugs 19 at each side'on the base casting 3 and to receive vertical connecting bolts 20 at one side and 21 at the other. By removing the bolt 20, which is at the side farthest from the channel member 12, the channel member 15 can be swung around on the other bolt 21 into parallel relation to the channel member 12, as shown in dotted lines, Figure 2. I

, For rigidly bracing the post in vertical position upon the base"formed of the base casting 3 and the channel members 12 and 15, there is provided diagonal braces 22 and 23, one for each of the channel members, made of a metal angle member and each secured at its lower end to a. connection member 24, secured to its channel member by a horizontal bolt 25 upon which the brace can be swung in a vertical plane. The upper ends of the braces are connectedto a connect ing ring 26, rigidly secured at the proper height to the post 1 by bolts 27. This ring is provided with a pair of outstanding lugs 28 for each of the braces 22 and 23, adapted to receive the upper ends of the braces between them and to be separably connected to same by horizontal bolts 29. By removing the bolts 29the braces can each be swung down on the lower end bolts 25 into parallel relation with itsbase channel member' when the derrick is collapsed, as best shown in Figure'10. V v l t The post 1 serves as a support for aboom 3O audthe boom is adapted to swing around horizontally on the post. through a ,complete circle. The boom 30 comprises a top member 31 made up of two metal angle nembers 32, parallel witheach other and extending from end to end of the boom and connected rigidly together by suitable connector and spacer plates. The boom is preferably arranged in inclined position with its outer end 33 raised considerably above the top 01 the post 1. This gives an added capacity to the lift of the derrick. The rear or inner end 34 of the boom is shorter than the outer end and is brought down low enough so that when a power device, such as an electric hoist 35, is secured upon the rear end the control levers 36 are at a suitable height to be manually operated. The boom 30 also includes brace members 37 and 38. The brace member 37 is secured rigidly to the outer end. 33 of the boom 30 and extends downwardly and inwardly toward the post 1, its lower end being connected to a support ring 39. The ring 39 is made of two parts secured together by a. bolt 40 at one side and a clamping device -10 at the other side, and is mounted in a circumferential channel 41 provided in an upper extension 42 of the fixed ring 26. The brace 37 is rigidly connected to the upper member 31 by a number of braces 4-2. The rear end 34.- of the upper member is also braced bythe brace member 38 which is connected at one end to the rear end of the member 31 and at its inner end to one of the parts of the split ring 39.

The boom is pivoted upon the top of the post by means of a support casting 15, having a circumferential flange 46 on its lower side within which the upper end of the post 1 is received and to which it is fastened by bolts 47 and an upwardly extending central nozzle 48 on its upper side. The boom is mounted on this support by means of a casting 49 rigidly secured to the boom and having a central depending nozzle 50 which receives the nozzle 48 and rests at its lower end upon the support 45. The several castings and nozzles are provided wtih openings in axial alignment with the post 1 for a purpose to be explained. By this means of mounting the boom it can swing around horizontally on the pivot; at the top. formed by the two nozzles and upon the ring 39 at the bottom of the boom. The boom, as described. is exceedingly stiff, strong and rigid aud relatively light in weight.

There is a sheave 51 suitably mounted at the outer end of the boom over which a. hoist cable 52 can be trained and usually a hoist block 53, having a book 54, is hung in a bight of the cable. The fall end of the cable, as illustrated in Figure 1, is carried to a suitable winding drum {arming part of the.

:power] device 35.

In the f :rm illustrated in Figure 11, a guide sheave 55 is' p'rovidcd on the beam 30 by which the cable is guided down through the post 1" and is indicated as being directed to a hoist device located on a level below that of the derrick.

In Figure 12 I have shown the post as benen ss ing provided with a s econdcable" guide sheave 56 near its lower end and by means of which the cable 52' can be directed out of the post 1 near its lower end to a hoistde VLCG located on the level otthe derrickr l l hile l; have only/illustrated has an electrio hoist, it willbe understood thatpower can be applied to the hoist cable 52 from any suitable cable winding mechanism.

l v hen it is desired to dismount the beam and collapse the derrick for storage or shipping the split ring 39 is loosened so that it can be freed from the flanges bordering the channel ll in the upper extension of thetixed ring 26. Then the rear half ot the split ringwhich is secured tothe forward end of the horizontul'brace 38 can be pulled out of tlie'channel all. To permit this action the plates 57 to which the rear end of the brace 38 connected byv a bolt 58 are slotted for receiving the bolt, as shown at 59. After the rear part of the ring 39" has been pulled out of the channel 41 the forward half of the ring can be pulled out,

by depressing the rear end 34 of the boom 80, thus lifting-the forward me ee, the top pivot being loose enough to permit this action. Thereafter-the boom is lifted up oil of the post. are loosened at their upper ends and swung out anddown, then the base channel -15 is" loosened and swnngaround,parallel with the base channel 12. Then the 'postl 1s loosened and swung-down mto horizontal position parallel with the base channels.

clamping device oil the" split ring 39:

connn-ises :1. bolt member 40 provided at onev end with a. nutand in place of a head at the othcd end, with a cam lever 40" The two pivotally mounted on the bolt. parts of the ring 39 which areconnectedby the bolt clamping device are purposely made spread a art and the ring 39 is adapted to.

be clamped tightly upon the post, that is, within the channel 41, to prevent the boom swinging around, by forcing said parts together by means of the cam lever 40. lVhen the lever hangs down the boom can be swung around on the post 1, and when the lever 4:0 is swung up to horizontal positionthe' ring 39 is tightly clamped upon the post against swinging and the boom is held around. I

Then the braces 22 and 23 For connectingthe The channel base members 12 and 15 are "provided with holes in the webs of the channels for receiving fasteningbolts for preventing the derrick tipping. over in use. It should be noted'thatthe brace '38 with the switchbox thereon can be swung up against the rear part of the boom, as shownin dotted lines in Figure 1, when the forward end of the brace the channel 41. 7

It is to be noted that the electric or other hoist device secured on the shorter rearend oi" the boom 30 tends to counterbalance the longer forward end and causes the boom to swing easily around on the post.

ins many modifications of my invention will readily suggest themselves to one skilled in the art, I do not limit or confine my in vention tothespecific construction herein shown and described.

I claim: V 1. in. a derrick of the kind described, a post, means for retaining the post upright, a boom pivotally mounted on the top of the post at a point nearer one end than the other has been freed irom row of the boom, the boominclinedupwardly toi ward its longer end, an inclined rigid brace extending down from the long end of the boom to the post, the lower end of the brace secured to abearing ring mounted in a circumferential channel on the post, a second brace extending from said ring to the rear end of the boom, said ring being" split and adapted to be separated for dismounting the V boom from the post, and said second brace arranged to be moved longitudinally in relation to the boom to separate the parts of the rmg.

2. In a derrick of the kind described, a post, means for retaining the post upright, a boom pivotally mounted on the top of'the post at a point nearer one end than the other of the boom, the boom inclined upwardly toward its longer end, an inclined rigid brace extending down. from the long end of the boomto the post, the lower end of the brace secured to a bearing ring mounted in acircumferential channel on the post, a

second brace extending from said; ring to being split and adapted to be separated for dis-' the rear end of the boom, said ring mounting the boom from the post, said second brace arranged to be moved longitudinally in relation to the boom to separate the pa-rtsoi the ring, and a 'llOlSl? device having a cable drum mounted on the rear shorter {end of the boom. V

In a derrick of the kind described, a post, 1 neans for retaining the postupright,

a boom pivotallymounted onlthe top of the post at a point nearer one end than the other of the boom,ltheboon1 inclined upwardly to wvard llZS: longer end, an inclined rigid brace extending down from the long end of the boom to the post, a bearing ring mounted in a groove on the post below itstop, the. bearing ring split transversely and the lower end of said brace secured to the forward half of the ring, a second brace extending from the rear half of the ring to the rear end of the boom, the connection between said brace and the boom being slotted to permit 1on- 

